Improvement in tempering-ovens



UNITED STATES ALANSON CARY, OF NEW YORK, N. Y.

IMPROVEMENT IN TEMPERlNG-OVENS.

Specication forming part of Letters Patent No. 116,267, dated'June 27, 1871.

T 0 all whom it may concern:

Be it known that I, ALANsoN GARY, of city, county, and lState of New York, have invented a new and useful Improvement in Temperin g-Oven; and I do hereby declare that the following is a full, clear, and exact description thereof, which will enable others skilled in the art to make and use the same, reference being had to the accompanying drawing forming part of this specification.

This invention relates to a new and useful improvement in furnaces or ovens for temperingsprings, especially designed for tempering` spiralwire furniture-springs 5 and consists in a temperin g-chamber connected with a furnace or fire-box, having therein a vertical shaft with horizontal rods or arms attached thereto, on which the spiral springs are suspended; and in curved detachingrods connected'with the casing, by means of which the springs are taken from the cylinder-rods and delivered from the tempering-chamber, as will be hereinafter described.

In the accompanying drawing, Figure 1 represents a top view with the cap or cover of the tempering-chamber removed. Fig. 2 is avertical section of Fig. l taken on the line a: x.

Similar letters of reference indicate corresponding parts.

1 A is the furnace or lire-box. B is the tempering-oven, which is heated to the proper temperature for tempering springs- 6000, more or less. C is the casing, which is cylindrical in form, in

the center of which is vertical shaft D, either with or without a cylinder or drum, but with horizontal arms 0r rods E connected therewith, extending radially in one or more tiers, as seen in the drawing. F is the cap or cover of the temperingchamber. G represents the curved detachingrods, which are arranged as seen in Fig. 1, so that when the shaft has made about half a revolution the springs will be gradually forced from the rods and Will drop down through the oriflce H, and will be delivered into a proper receptacle beneath. To allow of this mode of discharging the spring the casing is made to somewhat resemble a scroll, as seen in Fig. l. the arms E, is made to revolve very slowly, so that the springs which have been suspended on the rods will be exposed to the heat a suflicient length of time. The oven or chamber being kept at a uniform temperature at the required degree of heat, it will be seen that the springs will be evenly heated and automatically discharged at the right moment.

Having thus described my invention, I claim as new and desireto secure by Letters Patent-.-

In combination with the shaft or drum D and arms E, the detaching-rods G, arranged t0 operate substantially as specified.

The above specification of my invention signed by me this 29th day of March,.l87l.

Witnesses: ALAN SON CARY.

GEO. WV.l MABEE, ALEX. F. ROBERTS.

The shaft, with 

